I have also been photographed with the originals of Canon and the flashes of 2 other manufacturers. The YN-568 beats in my opinion everything under 400 quite loose. The build quality dominates all the other low-cost producers and is at a level comparable with devices from Canon, but the cost more than doubled. The range of functions like much, and the operation is to read the instructions in order. Without, however, somewhat difficult to set up and Unstrung flashes via E-TTL. Did you but once understood, which key you have to press and hold to activate the slave function, it is quite easy again.
The only shortcoming is the lack of opportunity to work with a battery pack, but this is not really important for my photography.
For the price and even for 100 more you will not find a comparable flash.